package com.FFF;

public class CalculatorTest {
    public static void main(String[]args){
        circle circle = new circle();
        circle.r = 10;
        circle.area();

        double pai = 3.1415926;
        double s = circle.area2(pai);
        System.out.println( "半径为" + circle.r
                +"的园，面积为"+s
        );




    }

}
